Gathering detailed insights and metrics for fastify-metrics
Gathering detailed insights and metrics for fastify-metrics
Installations
npm install fastify-metricsDeveloper Guide
BETA
Typescript
Yes
Module System
CommonJS
Node Version
22.9.0
NPM Version
10.8.3
Releases
49
Languages
2
TypeScript
JavaScript
TypeScript (87.96%)
JavaScript (12.04%)
Developer
Download Statistics
Total Downloads
0
Last Day
0
Last Week
0
Last Month
0
Last Year
0
GitHub Statistics
MIT License
109 Stars
296 Commits
33 Forks
3 Watchers
2 Branches
23 Contributors
Updated on May 29, 2025
Maintainers
1
Package Meta Information
Latest Version
12.1.0
Package Id
fastify-metrics@12.1.0
Unpacked Size
53.16 kB
Size
13.83 kB
File Count
14
NPM Version
10.8.3
Node Version
22.9.0
Published on
Sep 20, 2024
Total Downloads
Cumulative downloads
Total Downloads
NaN
Last Day
0%
NaN
Compared to previous day
Last Week
0%
NaN
Compared to previous week
Last Month
0%
NaN
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Last Year
0%
NaN
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Weekly Downloads
Monthly Downloads
Yearly Downloads
Dependencies
2
Peer Dependencies
1
Dev Dependencies
41
@commitlint/cli@commitlint/config-conventional@ianvs/prettier-plugin-sort-imports@jest/globals@microsoft/api-documenter@microsoft/api-extractor@semantic-release/changelog@semantic-release/commit-analyzer@semantic-release/exec@semantic-release/git@semantic-release/github@semantic-release/npm@semantic-release/release-notes-generator@tsconfig/node-lts@tsconfig/strictest@types/node@typescript-eslint/eslint-plugin@typescript-eslint/parserconventional-changelog-cliconventional-changelog-conventionalcommitseslinteslint-config-googleeslint-config-prettiereslint-import-resolver-typescripteslint-plugin-import-xeslint-plugin-jesteslint-plugin-prettiereslint-plugin-tsdocfastifyjestprettierprettier-plugin-jsdocprettier-plugin-packagejsonprettier-plugin-shprettier-plugin-sort-jsonpretty-quicksemantic-releasets-jestts-nodetypescripttypescript-eslint
fastify-metrics
Prometheus metrics exporter for Fastify.
This plugin uses prom-client under the hood.
This plugin also adds two http metrics for your routes:
- Requests duration histogram
- Requests duration summary
ToC
- fastify-metrics
Fastify support
- v3.x.x - supports
fastify-1.x - v4.x.x - supports
fastify-2.xprom-client-11.x - v5.x.x - supports
fastify-2.xprom-client-12.x - v6.x.x - supports
fastify-3.x - v9.x.x - supports
fastify-4.xprom-client-14.x
Notable changes
v10.x.x
- Replace route
context.configwithrouteConfigdue to deprecation in fastify v4 and removal in fastify v5. If you haddisableMetricsoption in you routeconfig, update fastify to latest version. - Prefer
request.routeOptions.methodover deprecatedrequest.routerMethod.
v9.x.x
- Fastify v4 support.
- Complete config rewrite, default behaviour changed.
- Support disabling metrics in route config.
- Now collects metrics only for registered routes by default.
- Unknown routes metrics collection disabled by default.
- Removed
metricsfromrequest. Now it usesWeakMapand not exposed. - Add balcklisting possibility for request methods.
- Registry overrides moved to metric configuration.
- Support overriding all Summary and Histogram options for default route metrics.
v6.x.x
- Fastify v3 support.
- Drop node.js 8 support.
enableDefaultMetrics- now enables only defaultprom-clientmetrics. Set totrueby default.enableRouteMetrics- additional flag that enables route metrics. Set totrueby default.
Installation
1npm i fastify-metrics --save 2pnpm i fastify-metrics --save
Features and requirements
- Collects default server metrics (see prom-client);
- Collects route response timings
- Adds
metricsto fastify instance for your custom metrics.
- Requires fastify
>=4.0.0. - Node.js
>=18.0.0.
Usage
Add it to your project like regular fastify plugin. Use register method and pass options to it.
1const fastify = require('fastify'); 2const app = fastify(); 3 4const metricsPlugin = require('fastify-metrics'); 5await app.register(metricsPlugin, { endpoint: '/metrics' });
It also exports client to fastify instance fastify.metrics.client which you may use it in your routes.
You may create your metrics when app starts and store it in fastify.metrics object and reuse them in multiple routes.
Registry clear
After calling registry.clear() all metrics are removed from registry. In order to add them again to the registry, call fastify.mterics.initMetricsInRegistry.
Plugin options
See for details docs
| Property | Type | Default Value |
|---|---|---|
| defaultMetrics? | IDefaultMetricsConfig | { enabled: true } |
| endpoint? | string | null | Fastify.RouteOptions | '/metrics' |
| name? | string | 'metrics' |
| routeMetrics? | IRouteMetricsConfig | { enabled: true } |
| promClient? | prom-client instance | null | null |
Route metrics
| Property | Type | Default Value |
|---|---|---|
| enabled? | boolean | { histogram: boolean, summary: boolean } | true |
| enableSummaries? | boolean | true |
| groupStatusCodes? | boolean | false |
| invalidRouteGroup? | string | '__unknown__' |
| methodBlacklist? | readonly string[] | ['HEAD','OPTIONS','TRACE','CONNECT',] |
| overrides? | IRouteMetricsOverrides | |
| registeredRoutesOnly? | boolean | true |
| customLabels? | Record<string, string | ((request: FastifyRequest, reply: FastifyReply) => string)> | undefined |
| routeBlacklist? | readonly (string | RegExp)[] | [] |
Route metrics enabled
The enabled configuration option can be either a boolean which enables/disables generation of both histograms and summaries, or it can be set to an object that allows you to pick individually whether you want histograms or summaries to be generated, for example:
{
...
routeMetrics: {
enabled: {
histogram: true,
summary: false
}
}
}
would result in the library only generating histograms.
Route metrics overrides
You may override default metrics settings. You may provide overrides for two metrics tracking http request durations: histogram and summary.
1const fastify = require('fastify'); 2const app = fastify(); 3const metricsPlugin = require('fastify-metrics'); 4 5await app.register(metricsPlugin, { 6 endpoint: '/metrics', 7 routeMetrics: { 8 overrides: { 9 histogram: { 10 name: 'my_custom_http_request_duration_seconds', 11 buckets: [0.1, 0.5, 1, 3, 5], 12 }, 13 summary: { 14 help: 'custom request duration in seconds summary help', 15 labelNames: ['status_code', 'method', 'route'], 16 percentiles: [0.5, 0.75, 0.9, 0.95, 0.99], 17 }, 18 }, 19 }, 20});
Labels
| Property | Type | Default value |
|---|---|---|
| getRouteLabel? | (request: FastifyRequest) => string | undefined |
| method? | string | 'method' |
| route? | string | 'route' |
| status? | string | 'status_code' |
Request durations summary
| Property | Type | Default value |
|---|---|---|
| name? | string | 'http_request_summary_seconds' |
| help? | string | 'request duration in seconds summary' |
| percentiles? | number[] | [0.5, 0.9, 0.95, 0.99] |
Request durations histogram
| Property | Type | Default value |
|---|---|---|
| name? | string | 'http_request_duration_seconds' |
| help? | string | 'request duration in seconds' |
| buckets? | number[] | [0.05, 0.1, 0.5, 1, 3, 5, 10] |
HTTP routes metrics in Prometheus
The following table shows what metrics will be available in Prometheus (subject to the enabled configuration option). Note suffixes like _bucket, _sum, _count are added automatically.
| metric | labels | description |
|---|---|---|
http_request_duration_seconds_count | method, route, status_code | Requests total count |
http_request_duration_seconds_bucket | method, route, status_code | Requests durations by bucket |
http_request_summary_seconds | method, route, status_code | Requests duration percentiles |
http_request_summary_seconds_count | method, route, status_code | Requests total count |
API Docs
See docs.
Changelog
See changelog.
See also
- fastify-prom-client - just simple client that adds aggregated http requests metric.
License
Licensed under MIT.
No vulnerabilities found.
Reason
no binaries found in the repo
Reason
no dangerous workflow patterns detected
Reason
license file detected
Details
- Info: project has a license file: LICENSE:0
- Info: FSF or OSI recognized license: MIT License: LICENSE:0
Reason
SAST tool detected but not run on all commits
Details
- Info: SAST configuration detected: CodeQL
- Warn: 6 commits out of 15 are checked with a SAST tool
Reason
Found 7/24 approved changesets -- score normalized to 2
Reason
0 commit(s) and 1 issue activity found in the last 90 days -- score normalized to 0
Reason
dependency not pinned by hash detected -- score normalized to 0
Details
- Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/codeql.yml:27: update your workflow using https://app.stepsecurity.io/secureworkflow/SkeLLLa/fastify-metrics/codeql.yml/master?enable=pin
- Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/codeql.yml:30: update your workflow using https://app.stepsecurity.io/secureworkflow/SkeLLLa/fastify-metrics/codeql.yml/master?enable=pin
- Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/codeql.yml:36: update your workflow using https://app.stepsecurity.io/secureworkflow/SkeLLLa/fastify-metrics/codeql.yml/master?enable=pin
- Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/codeql.yml:39: update your workflow using https://app.stepsecurity.io/secureworkflow/SkeLLLa/fastify-metrics/codeql.yml/master?enable=pin
- Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/release.yml:17: update your workflow using https://app.stepsecurity.io/secureworkflow/SkeLLLa/fastify-metrics/release.yml/master?enable=pin
- Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/release.yml:19: update your workflow using https://app.stepsecurity.io/secureworkflow/SkeLLLa/fastify-metrics/release.yml/master?enable=pin
- Warn: third-party GitHubAction not pinned by hash: .github/workflows/release.yml:22: update your workflow using https://app.stepsecurity.io/secureworkflow/SkeLLLa/fastify-metrics/release.yml/master?enable=pin
- Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/release.yml:32: update your workflow using https://app.stepsecurity.io/secureworkflow/SkeLLLa/fastify-metrics/release.yml/master?enable=pin
- Warn: third-party GitHubAction not pinned by hash: .github/workflows/release.yml:44: update your workflow using https://app.stepsecurity.io/secureworkflow/SkeLLLa/fastify-metrics/release.yml/master?enable=pin
- Warn: third-party GitHubAction not pinned by hash: .github/workflows/release.yml:52: update your workflow using https://app.stepsecurity.io/secureworkflow/SkeLLLa/fastify-metrics/release.yml/master?enable=pin
- Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/release.yml:71: update your workflow using https://app.stepsecurity.io/secureworkflow/SkeLLLa/fastify-metrics/release.yml/master?enable=pin
- Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/release.yml:73: update your workflow using https://app.stepsecurity.io/secureworkflow/SkeLLLa/fastify-metrics/release.yml/master?enable=pin
- Warn: third-party GitHubAction not pinned by hash: .github/workflows/release.yml:76: update your workflow using https://app.stepsecurity.io/secureworkflow/SkeLLLa/fastify-metrics/release.yml/master?enable=pin
- Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/release.yml:86: update your workflow using https://app.stepsecurity.io/secureworkflow/SkeLLLa/fastify-metrics/release.yml/master?enable=pin
- Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/verify.yml:16: update your workflow using https://app.stepsecurity.io/secureworkflow/SkeLLLa/fastify-metrics/verify.yml/master?enable=pin
- Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/verify.yml:18: update your workflow using https://app.stepsecurity.io/secureworkflow/SkeLLLa/fastify-metrics/verify.yml/master?enable=pin
- Warn: third-party GitHubAction not pinned by hash: .github/workflows/verify.yml:21: update your workflow using https://app.stepsecurity.io/secureworkflow/SkeLLLa/fastify-metrics/verify.yml/master?enable=pin
- Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/verify.yml:31: update your workflow using https://app.stepsecurity.io/secureworkflow/SkeLLLa/fastify-metrics/verify.yml/master?enable=pin
- Warn: third-party GitHubAction not pinned by hash: .github/workflows/verify.yml:43: update your workflow using https://app.stepsecurity.io/secureworkflow/SkeLLLa/fastify-metrics/verify.yml/master?enable=pin
- Warn: third-party GitHubAction not pinned by hash: .github/workflows/verify.yml:51: update your workflow using https://app.stepsecurity.io/secureworkflow/SkeLLLa/fastify-metrics/verify.yml/master?enable=pin
- Info: 0 out of 13 GitHub-owned GitHubAction dependencies pinned
- Info: 0 out of 7 third-party GitHubAction dependencies pinned
Reason
detected GitHub workflow tokens with excessive permissions
Details
- Info: jobLevel 'contents' permission set to 'read': .github/workflows/codeql.yml:17
- Info: jobLevel 'actions' permission set to 'read': .github/workflows/codeql.yml:16
- Warn: jobLevel 'contents' permission set to 'write': .github/workflows/release.yml:63
- Warn: jobLevel 'packages' permission set to 'write': .github/workflows/release.yml:67
- Warn: jobLevel 'checks' permission set to 'write': .github/workflows/release.yml:68
- Warn: no topLevel permission defined: .github/workflows/codeql.yml:1
- Warn: no topLevel permission defined: .github/workflows/release.yml:1
- Warn: no topLevel permission defined: .github/workflows/verify.yml:1
Reason
no effort to earn an OpenSSF best practices badge detected
Reason
security policy file not detected
Details
- Warn: no security policy file detected
- Warn: no security file to analyze
- Warn: no security file to analyze
- Warn: no security file to analyze
Reason
project is not fuzzed
Details
- Warn: no fuzzer integrations found
Reason
10 existing vulnerabilities detected
Details
- Warn: Project is vulnerable to: GHSA-968p-4wvh-cqc8
- Warn: Project is vulnerable to: GHSA-7q7g-4xm8-89cq
- Warn: Project is vulnerable to: GHSA-x4c5-c7rf-jjgv
- Warn: Project is vulnerable to: GHSA-h5c3-5r3r-rr8q
- Warn: Project is vulnerable to: GHSA-rmvr-2pp2-xj38
- Warn: Project is vulnerable to: GHSA-xx4v-prfh-6cgc
- Warn: Project is vulnerable to: GHSA-v6h2-p8h4-qcjw
- Warn: Project is vulnerable to: GHSA-pxg6-pf52-xh8x
- Warn: Project is vulnerable to: GHSA-3xgq-45jj-v275
- Warn: Project is vulnerable to: GHSA-mg2h-6x62-wpwc
Score
3.5
/10
Last Scanned on 2025-07-07
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